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#1
11-07-2013, 12:06 PM
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L2423 Pistons
I bought an SR 455 short block years ago. Someone put an SD 495030 crank, SD rods & these pistons in it. Looking for info on the pistons.
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 3 Generations of "Beach Boys Racing" ! Everybody knows somthin. Nobody knows everything ! 1st time on a dragstrip, 1964. Flagstart ! "Thanks for the entertainment." "Real Indians Don't Wear Bowties" |
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#2
11-07-2013, 01:34 PM
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I believe they fit only the SD rod. (narrow pin boss for SD rod)
Have single valve relief, correct? (not 2 like normal pistons.) These aren't the pop up pistons right? (didn't look them up, from memory, but crs possible) 
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#3
12-08-2013, 12:10 PM
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Thinking about putting the short block together & dropping a set of Edelbrocks on top.
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3 Generations of "Beach Boys Racing" ! Everybody knows somthin. Nobody knows everything ! 1st time on a dragstrip, 1964. Flagstart ! "Thanks for the entertainment." "Real Indians Don't Wear Bowties" |
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#4
12-08-2013, 12:23 PM
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Used that combo for years single valve relief piston ra 4 heads flat tappet hyd cam in a 3100 lb car I went 10.00 9.90 in the early 1990,s
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2008KRE Q16 Winner 2014 atco raceway doorslammer winner 86 grand am tube car 8.95 @152 455 eheads solid flat tappet cam Hoffman Racing building and racing Pontiacs for 35 years |
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#5
12-08-2013, 01:16 PM
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PISTONS
Have those in my 455 motor E-heads and Eagle rods floating pins No issues
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#6
12-08-2013, 05:01 PM
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Piston I.D.
Those are flat-top pieces with a single "trough" valve pocket (mentioned above), 3 cc's, 1.497 C.H., and weigh (nominally) 575 grams.
Has somewhat "heavy" ring pack, 1/16", 5/64", and 3/16". Recommended P/W .005". Thanks, Gary in N.Y. P.S. My records show "press-fit" only, no provision for lock ring grooves. This might be different on later pieces, not sure. Also not sure about centered or offset wrist pins?? |
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